baber/WOPTO huggingface dataset:
Patent GB-1385223-A (GB)
Title: Photoconductive member
IPC: G03G5/02
Filed: 1972-03-03
Abstract: 1385223 Photo-conductive member RANK XEROX Ltd 3 March 1972 10042/72 Headings G2C and G2H A photo-conductive member comprises a photo-conductive layer and a transparent layer connected to the photo-conductive layer for providing a gap between the layers to receive a developer. The layers may be connected around their peripheries by means of a binder and additionally connected at intermediate points by discontinuous lines or spots of binder. The photo-conductive layer may be completely surrounded by the peripheral binder. In one embodiment Fig. 1, an aluminium-coated polyethylene terephthalate sheet 10 having an optional layer or portions 15 of adhesive thereon, is overlaid with a photo-conductive layer 11 and has a transparent film 13 bonded thereto by an adhesive layer 12. The gap 14 between layers 11 and 13 is preferably up to 5 mm thick but may be non-existent until developer is introduced between the layers 11 and 13. The transparent film may be cellulose acetate or acetate-butyrate, polyethylene, a polyester, PVC, polyvinylidene chloride, a polycarbonate, polystyrene, polypropylene or ethyl or nitro-cellulose. The transparent film may be wider than the photoconductive layer and be secured to the back of the member Fig. 3 (not shown) or secured to a support bearing the member which is much wider than the member Fig. 2 (not shown). In another embodiment a conductive layer (52) is provided between the photo-conductive layer and the support and a conductive layer (53) on the underside of the transparent layer Fig. 5 (not shown). Alternatively the transparent layer may have a peripheral conductive strip (60), Fig. 6 (not shown) or a silk-coated wire may be used as the upper electrode. The photo-conductive member may be ZnO, or TiO 2  a mixture of dyes and an alkyd resin cross-linked with an isocyanate or copoly-styrene-butadiene on an aluminized polyethylene terephthalate sheet and may be developed by a redox system after imagewise activation. The member may be used in a chargeless method by exposing and then passing electroscopic developer between the photoconductive layer and the transparent layer. In electrolytic development it is preferred to pass warm water through the gap prior to introduction of the developer.
Patent GB-544131-A (GB)
Title: Improvements in hair-cutting machines such as electrically-driven devices for dry-shaving
IPC: B26B19/38
Filed: 1940-06-10
Abstract: 544,131. Dry shavers. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). June 10, 1940. No. 10104. [A Speci - cation was laid open to inspection under Sect. 91 of the Acts, Dec. 13, 1940.] [Class 131] The rotary blade and the apertured cutting member are of different metals to reduce wear and friction. The cutting member may be of steel and the blade of bronze or beryllium-copper alloy. Specification 523,032 is referred to.
Patent GB-493520-A (GB)
Title: Improvements relating to electric discharge tubes
IPC: H01J61/52
Filed: 1937-04-09
Abstract: 493,520. Discharge lamps. QUARZLAMPEN GES. April 9, 1937, No. 10187. Convention date, April 9, 1936. [Class 39 (i)] In a discharge lamp, particularly of the highpressure metal vapour type in which the envelope is U-shaped, the discharge passing round the bend of the U, one or more metal bodies are embedded in the material of the tube on the inner side of the bend so as to cool it. Fig. 1 shows a rod 5 embedded in this manner in a thickened portion of the wall of the tube. This portion may be channelled as shown in Fig. 3, so as to retain the discharge in the central position if the tube is placed horizontally. Fig. 2 shows two bars 7 and 8 with a channel between the portions of the envelope in which they are embedded containing an incandescent tungsten filament 10.
Patent GB-583370-A (GB)
Title: An improved method of manufacturing sintered iron articles
IPC: C22C33/02
Filed: 1944-05-26
Abstract: A method of making sintered iron articles involves the step of forming a mixture of finely powdered mill scale and powdered iron-carbon alloy and heating the mixture in a reducing atmosphere to reduce the mill scale to iron without melting same and to decarburise the iron-carbon alloy.  The mill scale may be ground to a fine powder by a pulveriser, crusher or ball mill.  A suitable source of iron-carbon alloy powder is the dust collected from shot blasting operations which is formed largely by the breaking down of the white cast iron shot.  Dust or powder thus produced needs no further grinding or comminuting.  Alternatively the powder may be produced by flowing a stream of molten iron-carbon alloy into a high velocity jet of water, steam or air or combination thereof and thereafter grinding the particles produced.  The mixed powders will preferably pass a 200 mesh screen.  The amount of carbon in the iron-carbon alloy powder is determined by analysis and the relative amounts of this powder and of powdered mill scale are chosen so that there is an excess of carbon present over that required to combine chemically with the oxygen of the mill scale.  The mixture is then heated at a temperature range of from 1,400 DEG F.-2,000 DEG F. in a reducing atmosphere, such as carbon monoxide 10-11 per cent.; hydrogen 13-16 per cent.; carbon dioxide 4 1/2 -5 per cent. and the balance nitrogen.  If other alloying constituents are required, such as manganese, molybdenum, vanadium, nickel, titanium or copper, these are preferably included in the molten iron-carbon alloy which is to be atomised and ground to produce the powder to be mixed with the powdered mill scale. Specification 583,371 is referred to.  Reference has been directed by the Comptroller to Specification 571,442.
Patent GB-363256-A (GB)
Title: Improvements in sterilizable feeding-bottle
IPC: A61J9/00
Filed: 1931-04-07
Abstract: 363,256. Feeding bottles; teats. PITAVY, E., 14, Rue CrÞspin du Gast, Paris. April 7, 1931, No. 10219. [Class 125 (i).] A feeding bottle, having a cylindrical body a, is formed with a frustum shaped upper part b, the generating line of which may be slightly curved. At the junction with the body, an integral projecting flange e is formed to minimize the risk of breakage. Two or more series of graduations and instructions, which may be in different colours, are indelibly applied to the sides. A teat d which is applied to the neck c, is slit as shown in Fig. 5 to form three lips f, and a V-shaped cut g is made on the side to admit air. The neck c is sufficiently large to admit a spoon and to facilitate cleaning.
Patent GB-967958-A (GB)
Title: Improvements in or relating to hot water circulation heating systems
IPC: F24D3/02
Filed: 1962-03-16
Abstract: 967,958. Central heating systems. WEATHERFOIL Ltd., and G. T. K. DEAN. June 17, 1963 [March 16, 1962], No. 10253/62. Heading F4U. A central heating system comprises a water heater 10 connected to heat distribution units 11 by flow and return conduits 12 and 13 respectively through which water is circulated by a pump 14; a feed tank and conduit 15 and 16 respectively, and an expansion pipe 18, 19; the system being made to retain pressure by the provision of a non-return valve 17 in the feed circuit, a pressure retaining valve 21 in the expansion pipe and a contractioncompensation vessel 20 located on the pressure side of the pressure-retaining valve, and bypassed by a conduit 23, of larger cross-sectional area than the expansion pipe. The contraction compensation vessel, which may be heated by an electric immersion heater 24, or by an oil heater, steam coil, or pipe direct from the water heater (not shown) is maintained at a temperature, which is controlled by a thermostat T4, sufficiently high above that of the remainder of the system to ensure that any steam formed due to a reduction in pressure is formed within the said vessel. If the pressure of the system rises, water is forced through the pressure retaining valve 21 which discharges into the feed water tank. In the form shown, the water heater 10 is oil-fired and electrically controlled by thermostats T2 and T3 (electrical circuit, Fig. 2, not shown) which, with thermostats T1 and T4 positioned in the vessel 20 prevent the water from being run at a temperature as great as that in the said contraction-compensation vessel.
Patent GB-259849-A (GB)
Title: Improvements in and relating to folding clock keys
IPC: G04B3/04
Filed: 1926-04-19
Abstract: 259,849. Junghans, Akt.-Ges., Geb. Feb. 15, 1926, [Convention date]. Keys, particularly for alarm clocks, comprise a barrel a having a head c in which is pivoted the handle b, the pivotal extensions of the handle being pressed upon by tongues e, e<1> projecting from an annular spring d which is fixed to the head of the barrel by roughening and burring over.
Patent GB-843766-A (GB)
Title: Improvements relating to dynamo-electric machine salient-pole rotors
Inventor: ELLISON ARTHUR JAMES
IPC: H02K3/18
Filed: 1956-04-04
Abstract: 843,766. Cores and coils for dynamo-electric machines. BRITISH THOMSON-HOUSTON CO. Ltd. March 8, 1957 [April 4, 1956], No. 10316/56. Class 35. A dynamo-electric machine salient pole rotor comprises a plurality of pole pieces each having a pole shank 2 on which is disposed a pole winding comprising turns 4 of strip or multiple conductors of which the turn end portions have at least a partly cylindrical shape substantially concentric with the axis of the rotor. The strip or multiple conductors are arranged in layers wound edgewise and either successive turns have progressively varying radii or several consecutive turns have an appropriate mean radius of curvature. The turns have inter-turn insulation 6, end insulation collars 5, and are pressed radially against a pole shoe 3 by a spring plate 7. The pole shoe 3, of uniform thickness. can be rolled from flat plate. Specification 622, 032 is referred to.
Patent GB-1375316-A (GB)
IPC: C10G25/03
Filed: 1972-03-07
Abstract: 1375316 Separating hydrocarbons by adsorption UNIVERSAL OIL PRODUCTS CO 7 March 1972 [8 March 1971] 10474/72 Heading C5E  In a process for separating hydrocarbons from a feed 7 comprising the steps of adsorption 1, purification 2 and desorption 3, a buffer zone 4 is provided in which raffinate 15 from the zone 1 is passed through desorbent from the zone 3 to displace desorbent from the void volume of the adsorbent. Each zone 1 ... 4 may comprise one or more beds, and in an example, a series of 24 beds of a zeolite are used in simulated moving bed operation. Xylenes, diethylbenzenes, ethylbenzene and various C 9  to C 12  aromatic hydrocarbon isomers may be separated in liquid or vapour phase. Recycle raffinate, from which desorbent has been removed, is led in at 6 to displace desorbent from the adsorbent, and recycle extract from the fractionation of extract leaving at 9, is led in at 8 to remove raffinate from the zeolite in zone 2. Desorbent is supplied at 10 for zone 3.
Patent GB-774496-A (GB)
Title: Improvements in or relating to variable ratio motion transmitting gearing
Inventor: HAUPT WILHELM
IPC: F16H3/02
Filed: 1955-04-12
Abstract: 774,496. Taximeters. KIENZLE APPARATE GES. April 12, 1955, No. 10485/55. Class 106 (3). [Also in Group XXIV] In change-speed gearing for a taximeter time drive the gear train between a wheel 86 and an escapement-controlled wheel 32 includes two " pickoff " gear pairs 26-27, 28-29 which are held on D-section overhung portions of three spindles by nuts 30 so that the gears are readily removable to change the gear ratio. The three spindles are equally spaced and mounted in parallel bearing plates 24, 25. The wheel 86 is driven by an electro-magnetic clock drive as shown in Specification 774,492 and is geared to a roller clutch on a time and distance shaft so that the time drive can overrun the distance drive.
Patent GB-422159-A (GB)
Title: Improvements in and relating to refrigerating machines of the absorption type
IPC: F25B15/10
Filed: 1934-04-06
Abstract: 422,159. Refrigerating. NAAMLOOZE VENNOOTSCHAP ATHANO, Rotterdam, Holland. April 6, 1934, No. 10501. Convention date, May 11, 1933. [Class 29] Absorption systems.-In a continuous-cycle inert gas system the evaporator 6 is provided with an external circulating pipe 7, and the absorber 10 with an external pipe 9 connected together by a pipe 8. It is stated that the refrigerant vapour diffuses from the evaporator to the absorber through these pipes and that the inert gas does not flow into the evaporator, so that no heat is transmitted thereby from the absorber to the evaporator. The Specification, as open to inspection under Sect. 91, comprises the formation of part of the absorber circulation pipe as a gas heat exchanger. This subject - matter does not appear in the Specification as accepted.
Patent GB-1105654-A (GB)
Title: Improvements in and relating to transmission belts
IPC: F16G5/16
Filed: 1964-03-13
Abstract: 1,105,654. Belt gearing. C. W. JONES, [trading as C. W. JONES & SON]. 12 March, 1965 [13 March, 1964], No. 10621/64. Heading F2Q. An endless transmission V-belt or other belt comprises separate spaced endless layers 10 12, 14, 16 with studs 26 fixed to a layer and projecting into spaced longitudinal slots in an adjacent layer to allow relative layer movement during belt movement. The studs 26 are arranged in lateral pairs and have shoulders 34 to separate adjacent layers 10, 12 and their ends are riveted over spaced plates 18 on the outer belt layer 10. A head 32 on the studs 26 positions the layer 12 thereon. A similar arrangement joins layers 12, 14 and layer 14 has single spaced studs 52 engaged spaced control slots in the inner layer 16. The ends of studs 52 are riveted over plates (50) having teeth (56) dug into the layer 16 to prevent rotation of the plates (50). The studs may extend from both sides of a layer to engage slots in both adjacent layers. The layers may have folded edges or if of rubber have square or inclined edges. Reinforcing woven nylon or steel belts may be placed between the belt layers.
Patent GB-346157-A (GB)
Title: Improvements in or relating to ignition systems for internal combustion engines
IPC: H01T13/05
Filed: 1930-04-03
Abstract: 346,157. Couplings. GUINNESS, K. E. L., 10, Cadogan Square, London, and CARINGTON, C. M., Stile Cottage, Kingston Hill, Surrey. April 3, 1930, No. 10625. [Class 38 (i).] A metallic tubular elbow encloses the coupling of a sparking- plug to its current lead to prevent the emission of high-frequency impulses. The gland nut 17 is formed with an extension 14 lined with mica 15. An insulating member of svnthetic resin houses the cable 31 and its rubber covering in one arm 28, while the arm 29 is traversed by a conductor 33, pointed at one end to pierce the cable 31 and split at the other for engagement within the hollow end 19 of the central electrode. In a modification the lower end of the conductor 33 is bored and contains a spring-pressed contact which rests on the electrode top. The end of the metallic casing 30 is clamped between washers 25, 26 by a nut 27. The insulator 28, 29 may be withdrawn through an opening which is normally covered by a metal plate 37 formed with an edge 38 for engaging a circumferential groove in the tube 14 and detachable therefrom by pressure on a lever 41. The sparking- plug may then be slid away, the terminal 33 unscrewed and the plate 37 completely detached by removing pin 42.
Patent GB-225459-A (GB)
Title: Oil seal packing for shaft bearings
IPC: F16J15/18
Filed: 1924-04-30
Abstract: 225,459. Haney, E. H. April 30, 1924. Oil, retaining. - Oil is retained in shaft bearings by means of felt or like absorbent washers which surround the shaft and are held against the ends of the bearing by semicircular plates or cups which are secured to the bearing by screws and are adjustable longitudinally so as to compress the washers. As shown in Fig. 1, semicircular cups 4 are employed to press the washers 3 against the ends of the bearing. A flat spring 9 mounted on one of the cups 4 carries a plug 8 which closes the oil hole 7. In the case of a split bearing, tapered washers 14, Fig. 3, are pressed into countersunk grooves in the ends of the bearing by semicircular plates 15, and felt or like strips 18 are placed in longitudinal grooves 17 formed between the halves of the bearing.
Patent GB-269903-A (GB)
Title: Improvements in amusement and exercising apparatus
IPC: A63G1/28
Filed: 1927-04-20
Abstract: 269,903. Redam, E. April 20, 1926, [Convention date]. Roundabouts; exercising-apparatus. - Aeroplanes 6 - - 9 each carrying a rider who drives propellers by means of pedals 15 are arranged one above the other, as on beams 2 - - 5 rotatable on a vertical spindle 1, so that a race is simulated. The distances travelled are indicated on the devices 10 - - 13. The wings 16, 17 are mounted on a bicycle frame 14 and a screen 19 is placed between the rider and the propeller 18.
Patent GB-352065-A (GB)
Title: Improvements in and relating to semi-automatic method and apparatus for tracing diagrams from indications read on a measuring apparatus
IPC: G01D9/16
Filed: 1930-04-03
Abstract: 352,065. Recording-apparatus. MATERIEL ELECTRIQUE S. W., 32, Cours Albert 1<er>, Paris. April 3, 1930, No. 10643. Convention date, Jan. 15. [Class 106 (iv).] Recording by co-ordinates.-A device for use with measuring instruments for recording the readings comprises a recordstrip driven at a constant or variable speed in accordance with time or other variable and a graduated rule arranged at rightangles to the travel of the strip on which is adapted to slide a cursor carrymg a marking member settable in accordance with the readings. The invention is particularly applicable to acoustic submarine sounding apparatus in cases where it is necessary to limit the apparatus required. As shown in Figs. 2 and 3, a record strip 1 passes between feed rollers 2, 3, from a supply roller 5 over a table 16. The roller 2 is driven through gearing 10 and a clutch 11 from a clockwork or electric motor 9. A rule 12 with an adjustable scale 15 for correcting the zero reading is mounted in the casing at right-angles to the direction of travel of the strip and carries a cursor 13 on which is mounted a perforating device 18. The device as shown in Fig. 4, comprises a hollow screw-threaded member 34 closed at its ends by centrally apertured caps 35, 36. A perforating needle 19 passes through the cap 36 and is carried by a spring supported piston 37 on which bears a piston 41 terminating on a rod 40 and push-button 39. A groove 17 is provided in the table 16 in alignment with the path of travel of the perforating needle. The speed of the recordstrip may be regulated as by the inclusion of an electrical resistance 25 in the motor circuit and the time abscissµ may be adjusted by manipulation of the milled heads 21, 22. Replacement of the record-strip is facilitated by hingeing the end wall 26 of the casing and by mounting the rod 5 in a slot 28 in a side plate the opposite end being supported on an adjustable pivot 29, the pressure being regulated by a spring 30. A uniform tension on the record-strip is ensured by brake springs 7 engaging the bosses of guide plates 6 on the roller 5. The scale 15 instead of being uniform may be set out in accordance with any law or formula involved in the apparatus to which the invention is applied. Thus, e.g., the scale may be logarithmic in the case of a venturi meter for measuring flow of fluids.
Patent GB-936127-A (GB)
Title: Improvements in and relating to electrical logical circuit elements
IPC: G06F7/38
Filed: 1961-03-23
Abstract: 936,127. Circuits employing bi-stable magnetic elements. KOBUSAI DENSHIN DENWA KABUSHIKI KAISHA. March 23, 1961 [March 23, 1960; April 16, 1960; July 30, 1960 (3); Oct. 10, 1960], No. 10662/61. Class 40 (9). In a circuit for performing logical operations, the two cores of a pair of magnetic cores are first set to opposite polarities by a current in a setting winding S, Fig. 1c, and are subsequently fed simultaneously over separate windings with (a) a bias signal on windings W sufficient only to bring back the induction in each core to zero, (b) a constant signal on windings Nc and (c) one or more binary signals on windings N 1 , N 2 , N 3 , &c. representing information on which the logical operation is to be performed. The intensity of the constant signal is an odd number of times the intensity of a signal on winding N 1 , N 2 , &c. The cores are read by a current applied through terminals +R,- R to split output windings N 0 , rectifiers D 1 , D 2  or other gates ensuring that the output windings present a high impedance during a writing operation. The output appears as a current I 1  or I 2  on terminal X or #X. In Fig. 6, the reading current Ir in element x appears as I 1  and terminal X or as I 2  at terminal X according to the digit stored. Only I 1  is used to control element y. As shown, the constant current Ic in windings NC is in a negative direction so that a signal current I 1  on terminal X produces an output current at Y when element y is read. Logical sum.-Two elements x, y, Fig. 12a, like the element shown in Fig. 6, feed a third element z. Windings N 1 , N 2  are connected to the X terminal of x and the #Y terminal of y and the circuit gives an output in response to X or Y or both. The constant signal Ic is half the signal current and is positive. Logical product.-If the constant signal of Fig. 12a is reversed the circuit gives an output only in response to X and Y. Other logical combinations of x, x, y, #y can be derived by arrangement of the directions of the windings N 1 , N 2 , Ic or by adding a further input element z. The circuit shown in Fig. 13 derives u in the equation Driving circuits.-The read circuits of a number of circuit elements 1, 2, &c., Fig. 15, are connected in series to a transformer T 3  or T 4 . A resistance capacity arrangement R, C gives the current source a high impedance as seen from the circuit elements 1, 2, &c. The constant current signals may be provided by a similar circuit (Fig. 16, not shown), in which the R, C circuit are replaced by rectifiers.